Thick film variable resistor

Details Thick film variable resistor Thick film variable resistor

1974-11-07

1976-02-03

Weiffenbach, Cameron K.

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Web or sheet containing structurally defined element or...

Physical dimension specified

156 24, 427103, 427124, 427125, 427229, 428148, 428432, 338162, B05D 512

Patent

active

039365689

ABSTRACT:
An improved thick film resistor for use with variable resistor applications includes a gold overlay applied to the contact surface of the thick film resistor after first etching the contact surface with acid. The combination of the gold overlay and acid etching of the contact surface reduces contact resistance and the contact resistance variation and provides improved wear resistance of the contact surface in a variable resistor element.

REFERENCES:
patent: 2827536 (1958-03-01), Moore et al.
patent: 3206702 (1965-09-01), Greenwood
patent: 3319320 (1967-05-01), Cruthers
patent: 3324440 (1967-06-01), Strief et al.
patent: 3326720 (1967-06-01), Bruhl, Jr. et al.
patent: 3370948 (1968-02-01), Rosenbauer
patent: 3379567 (1968-04-01), Wright
patent: 3573948 (1971-04-01), Tarnopol

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